. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. from the " Cambridge, ; 337 in the enlargement of the pits and of the marginal elevations ; also the central area of the valve-surface is more depressed. The anterior border is flange-like, and within this runs a fenestrated ridge. From the invariably large size of the specimens it is just possible that we have here a senile form of C. gaultina ; but since the specimens are so exceptionally rare and the carapace extraordinarily developed, it seems advisable
. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. from the " Cambridge, ; 337 in the enlargement of the pits and of the marginal elevations ; also the central area of the valve-surface is more depressed. The anterior border is flange-like, and within this runs a fenestrated ridge. From the invariably large size of the specimens it is just possible that we have here a senile form of C. gaultina ; but since the specimens are so exceptionally rare and the carapace extraordinarily developed, it seems advisable to regard it as distinct, although indicating its relationship with C. gaultina. One valve was found in the washings from Swaffham. Cythere subtuberculata, sp. n. (Figs. 3 a, b.) One of the valves from the Cambridge Greensand of Swaffham, perhaps somewhat allied to the foregoing species, C. gaultina, is rather more elongate than that species and Fig. a. b. Cythere subtuberculata, sp. n. a, left valve ; b, edge of valve. X 40. differs materially in the ornamentation by having the poly- gonal reticulation of the surface emphasized by extra shell- growth, tubercular processes being disposed along the dorsal border and towards the posterior extremity of the valve. Cythere Komnckiana, Bosquet. (Figs. 4 a, b.) Cythere Komnchiaua, Bosquet, 18-">4, Mom. Comm. geol. Neerlande, vol. ii. p. 110, pi. ix. tig. 7 ; Chapman and Sherborn, 1893, Geol. Mag. vol. x. p. 346, pi. xiv. fig. 4 (non fig. 2). Messrs. Jones and Hinde refer some specimens in my collection of Ostracoda from the Gault of Folkestone to this species (Suppl. Mon. pp. 52 and 61). None of them are quite comparable with Bosquet's figured specimens, but their relationship is sufficiently evident to warrant their association with this species. The figures of Cythere KonincJdana and C. lineatopunctata. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readabi
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